JPS63278614A - Pressing method for indeterminate hollow section member and core for pressing - Google Patents
Pressing method for indeterminate hollow section member and core for pressingInfo
- Publication number
- JPS63278614A JPS63278614A JP11047987A JP11047987A JPS63278614A JP S63278614 A JPS63278614 A JP S63278614A JP 11047987 A JP11047987 A JP 11047987A JP 11047987 A JP11047987 A JP 11047987A JP S63278614 A JPS63278614 A JP S63278614A
- Authority
- JP
- Japan
- Prior art keywords
- core
- section
- mold
- shape
- die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003825 pressing Methods 0.000 title claims description 7
- 238000003466 welding Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 17
- 230000001788 irregular Effects 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 10
- 239000007769 metal material Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 abstract 2
- 238000000465 moulding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、中空部材、殊に不定形中空断面部材のプレス
加工方法及びプレスエ用中子に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for pressing hollow members, particularly hollow cross-section members of irregular shape, and a core for pressing.
〈従来の技術〉
自動車の車体構成部材にはレインホースメント等各種の
中空断面部材が用いられる。この中空断面部材は板金材
をプレス加工して成形される。このプレス加工において
中空断面が全て定形である場合には一枚の板金材により
閉断面形状に成形することができるが、不定形の場合に
は不可能である。従って、従来では第10図で示すよう
に、フランジ2を有する2分割した同一形状の部材1a
、1bを形成し、フランジ2を溶接して中空断面部材と
していた。<Prior Art> Various hollow cross-section members such as reinforcements are used as body components of automobiles. This hollow cross-sectional member is formed by pressing a sheet metal material. In this press working, if the hollow cross-sections are all regular shapes, it is possible to form the hollow cross-sections into a closed cross-sectional shape using a single sheet metal material, but this is not possible if the hollow cross-sections are irregular shapes. Therefore, in the past, as shown in FIG.
, 1b were formed, and the flange 2 was welded to form a hollow cross-sectional member.
〈発明が解決しようとする問題点〉
上記フランジ付きの中空断面部材によると、ワイヤハー
ネスを配線する部位ではフランジとワイヤハーネスとが
干渉してワイヤハーネスを損傷したり、中空断面部材の
組付作業時あるいは車体の保守点検時等にフランジに手
が触れると傷をするなどの問題がある。また、2分割構
成の中空断面部材は一体加工した中空断面部材に比較す
ると捩れ剛性が劣っている。<Problems to be Solved by the Invention> According to the above-mentioned hollow cross-sectional member with a flange, the flange and the wire harness may interfere with each other in the wiring area of the wire harness, causing damage to the wire harness, and the assembly work of the hollow cross-sectional member may be difficult. There are problems such as scratches if the flange is touched by the hand during maintenance or inspection of the vehicle body. Further, a hollow cross-sectional member having a two-part structure is inferior in torsional rigidity compared to a hollow cross-sectional member formed integrally.
〈問題点を解決するための手段〉
本発明は、上記従来の問題点を解決するために、不定形
中空断面部材を一体加工可能としたプレス加工方法及び
プレス加工用中子を提供するものである。<Means for Solving the Problems> In order to solve the above-mentioned conventional problems, the present invention provides a press working method and a press working core that enable integral processing of an irregular hollow cross-section member. be.
本発明のプレス加工方法は、所定の形状に外形抜きした
板金材を略ハツト状断面に形成する工程と、前記工程で
成形された略ハツト状断面の鍔状部分を複数に分割した
各部の型をフレキシブルジヨイントにより屈伸自在に連
結してなる中子に沿って寄せ曲げして中空断面に成形す
る工程とからなり、前記寄せ曲げによる突当部を必要に
応じて溶接するものである。The press working method of the present invention includes a step of forming a sheet metal material cut into a predetermined shape into a substantially hat-shaped cross section, and a mold of each part by dividing the flange-shaped part with the substantially hat-shaped cross section formed in the above step into a plurality of parts. The method consists of a step of forming a hollow cross section by bending the cores along a core formed by bendably and extensibly connecting them by a flexible joint, and welding the abutting portions formed by the bending as necessary.
また、本発明のプレス加工用中子は、成形すべき形状の
型を複数に分割し、この型をリンクにより屈伸可能に連
結すると共に、スプリングにより成形すべき形状の型形
態に引き寄せてなるものである。Furthermore, the press working core of the present invention is made by dividing a mold having a shape to be molded into a plurality of parts, connecting the molds so that they can bend and expand through links, and pulling them into the shape of the mold having the shape to be molded by a spring. It is.
く作 用〉
本発明は、上記特殊な中子を用いることにより不定形中
空断面部材を一枚の板金材にて一体加工により成形可能
とする。Effects> By using the special core described above, the present invention enables molding of an irregularly shaped hollow cross-section member from a single sheet metal material by integral processing.
〈実施例〉
以下本発明の実施例を第1図乃至第9図に基づいて説明
する。先ず第1図によって成形工程の概略を説明する。<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 to 9. First, the outline of the molding process will be explained with reference to FIG.
第1図(^)の第1工程で示すように板金材よりなるワ
ークWを所定の形状に外形抜きし、これを第1図(B)
の第2工程で示すように略ハツト状断面にプレス加工す
る。As shown in the first step in Fig. 1(^), the workpiece W made of sheet metal material is cut into a predetermined shape, and this is shown in Fig. 1(B).
As shown in the second step, it is pressed into a substantially hat-shaped cross section.
この第2工程から本発明の最も重要な要素である第1図
(0)の第4工程へ移ってもよいが、成形品の不定形形
状によっては品質向上のために第1図(C)の第3工程
を経て第4工程に移る場合がある。この第3工程では第
2工程で成形された略ハツト状断面のワークWの鍔状部
分10を内方に曲げて湾曲状断面とし第4工程の加工を
容易化する。From this second step, it is possible to proceed to the fourth step shown in FIG. 1 (0), which is the most important element of the present invention, but depending on the irregular shape of the molded product, the process shown in FIG. 1 (C) may be performed to improve quality. The process may proceed to the fourth step after passing through the third step. In this third step, the flange-shaped portion 10 of the workpiece W having a substantially hat-shaped cross section formed in the second step is bent inward to form a curved cross section to facilitate processing in the fourth step.
第4工程は後述する特殊な中子18を用いて第2工程で
成形された略ハツト状断面のワークWの鍔状部分10を
中子18に沿って寄せ曲げして中空断面部材とする。ま
た、第3工程を経る場合は、湾曲断面のワークWの湾口
を第4工程にて閉じて中空断面部材とする。従って、第
3工程は必要に応じて採用され本発明の必須の構成要件
ではない。In the fourth step, using a special core 18 to be described later, the flange-shaped portion 10 of the workpiece W having a substantially hat-shaped cross section formed in the second step is bent along the core 18 to form a hollow cross-sectional member. Further, in the case of going through the third step, the mouth of the workpiece W having a curved cross section is closed in the fourth step to form a hollow cross section member. Therefore, the third step is adopted as necessary and is not an essential component of the present invention.
第4工程を終ったワークWは、寄せ曲げによる突当部1
1を溶接するが、これも溶接を必要としないものにあっ
てはそのままでもよい、。After the fourth process, the workpiece W has abutment part 1 due to bending.
1 is welded, but if it does not require welding, it can be left as is.
第2図及び第3図は上記第2工程の成形加工例を示すも
ので、プレス機13により上型12a下型12bとによ
り鍔状部分10付きの略ハツト状断面のワークWを成形
する。FIGS. 2 and 3 show an example of the molding process in the second step, in which a workpiece W having a substantially hat-shaped cross section with a flange-shaped portion 10 is molded by a press machine 13 using an upper mold 12a and a lower mold 12b.
第4図及び第5図は、必要に応じて採用される第3工程
例であり、プレス機14により下型15と上型16とに
よって略ハツト状断面のワークWの鍔状部分10を内方
に曲げて湾曲状断面に成形する。FIGS. 4 and 5 show an example of a third process that is adopted as necessary, in which a press machine 14 is used to internally press a flange-shaped portion 10 of a workpiece W having a substantially hat-shaped cross section using a lower mold 15 and an upper mold 16. Bend it in the opposite direction to form a curved cross section.
上記説明上第3工程を採用している関係で第4工程とな
っている本発明の最も重要な構成要素を第6図乃至第9
図で説明する。The most important component of the present invention, which is the fourth step because the third step is adopted in the above explanation, is shown in FIGS. 6 to 9.
This will be explained with a diagram.
第6図において18は中子である。この中子18は第9
図(^)で判断できるように不定形中空断面部材の製品
ワークWの形状の型を複数の型18a 、18bに分割
し、この分割した型18a 、18bを複数のリンク1
9a 、19b 、19c 、によって屈伸可能に連結
する。さらに、リンク19aにスプリング20を結合し
、このスプリング20の引張力にてリンク19a 、1
9b 、19cを介して型18bを型18aに引き寄せ
て製品ワークWの形状の型形態とした構成である。尚、
26はリンク19aについているビン、27はビン26
の案内溝である。In FIG. 6, 18 is a core. This core 18 is the 9th
As can be seen in the figure (^), the mold of the shape of the product workpiece W, which is an irregular hollow cross-sectional member, is divided into a plurality of molds 18a and 18b, and these divided molds 18a and 18b are used to form a plurality of links 1.
9a , 19b , 19c are connected in a bendable and extensible manner. Further, a spring 20 is connected to the link 19a, and the tension of the spring 20 causes the links 19a, 1
The mold 18b is drawn to the mold 18a via 9b and 19c to form a mold in the shape of the product workpiece W. still,
26 is the bottle attached to the link 19a, 27 is the bottle 26
This is the guide groove.
前記中子18は第6図及び第7図で示すようにプレス1
i17に装備されている。すなわち、中子18の型18
aの一端はプレス$117の基台上に昇降可能に設置さ
れた支持体30上でシリンダ23により水平方向に進退
移動するプレート21に固定されている、22は中子1
8に嵌挿したワークWの一端が当接するストッパであり
、前記基台上に固定され、中子18が進退移動可能に貫
通している。The core 18 is pressed into the press 1 as shown in FIGS. 6 and 7.
Equipped with i17. That is, the mold 18 of the core 18
One end of a is fixed to a plate 21 that moves horizontally back and forth with a cylinder 23 on a support 30 that is movably installed on the base of the press $117, and 22 is the core 1
The stopper is a stopper that one end of the workpiece W inserted into the stopper 8 comes into contact with, and is fixed on the base, through which the core 18 can move forward and backward.
24は前記基台上に設置された下型であり、図略の昇降
動する上型と対応する。24 is a lower mold installed on the base, and corresponds to an upper mold which moves up and down (not shown).
第8図の25も中子を示す、この中子25は上型に取り
付けられていて、上型の下降ストロークによりカム29
が基台上の当接部材28に当接することにより前進し、
スプリングで後退移動する。25 in FIG. 8 also indicates a core. This core 25 is attached to the upper mold, and the cam 29 is moved by the downward stroke of the upper mold.
moves forward by contacting the contact member 28 on the base,
Move backwards with a spring.
この中子25は円軸状であり、ワークW端の一部が円筒
形状の場合に用いられる。This core 25 has a cylindrical shape, and is used when a part of the end of the workpiece W is cylindrical.
次に前記第4工程の作用について説明する。Next, the operation of the fourth step will be explained.
プレス機17の図略の上型が上昇しているときには支持
体30は基台上で上昇端に位置し、中子18は下型24
の上方に位置している。従って、前記第2工程より第4
工程に移る場合゛は略ハツト状断面に成形されたワーク
Wを下型24上にセットする。When the unillustrated upper die of the press machine 17 is rising, the support body 30 is located at the rising end on the base, and the core 18 is positioned at the lower die 24.
It is located above. Therefore, from the second step to the fourth step,
When proceeding to the process, a workpiece W formed into a substantially hat-shaped cross section is set on the lower die 24.
また、第3工程を経て第4工程に移す場合には湾曲状断
面のワークWを中子18に嵌挿してセットする。Further, when moving to the fourth step after passing through the third step, a workpiece W having a curved cross section is inserted into the core 18 and set.
上記の何れにおいいてもワークWの一端はストッパ22
に当接してセットする。In any of the above, one end of the workpiece W is connected to the stopper 22.
Set it by touching it.
しかる後に図略の上型を下降し第1図(0)並びに第9
図(^)で示すように下型24及び中子18により完全
な不定形中空断面部材の製品に成形する。After that, the upper mold (not shown) is lowered to form the parts shown in Figures 1 (0) and 9.
As shown in the figure (^), the lower mold 24 and the core 18 are used to form a complete product with an irregular hollow cross section.
上記成形後の中子18の抜き取りは次のように行われる
。成形直後は第9図(A)の状態である。The core 18 after the above-mentioned molding is extracted as follows. Immediately after molding, the state is shown in FIG. 9(A).
この状態で第6.7図で示すシリンダ23を作動して第
9図(B)で示すようにプレート21を後退移動させる
。これによりプレート21に一端が固着されている中子
18も一体に後退移動する。このときワークWはストッ
パ22に当接しているため中子18はワークWより抜は
出てくる。ところでプレート21の後退移動の初期時に
おいてはビン26がリンク19aの案内溝27を慴動し
て型18のみが後退移動してスプリング20が伸びリン
ク19aは動かない、従って型tabは所定の位置に停
止したままである。In this state, the cylinder 23 shown in FIG. 6.7 is operated to move the plate 21 backward as shown in FIG. 9(B). As a result, the core 18 whose one end is fixed to the plate 21 also moves backward together. At this time, since the work W is in contact with the stopper 22, the core 18 comes out from the work W. By the way, at the beginning of the backward movement of the plate 21, the bin 26 slides through the guide groove 27 of the link 19a, and only the mold 18 moves backward, and the spring 20 is stretched and the link 19a does not move.Therefore, the mold tab remains at a predetermined position. It remains stopped at .
次いで第9図(C)で示すように型18aの後退移動量
が案内溝27の長さ以上になるとピン26が案内溝27
の後端に係合しリンク19aは型18aと一体に後退移
動を開始する。このリンク19aの後退移動により他の
リンク19b 、 19Cが引っ張られて伸長し型18
aと型18bとは結合状態から引き離された状態となり
型111’bはワークWの屈曲部の上方向への移動が可
能となってリンク19a〜19cに引かれて好動を開始
する。さらに型18aの後退移動が進んで第9図([1
)で示すようにリンク19a〜19cの連結枢着部の回
動により型18bがワークWの屈曲部で姿勢変位を許容
し型18bはワークWの屈曲部の通過途中に位置したと
ころでシリンダ23の後退移動を停止し前進移動に切替
えて原位置戻しを行う、このとき、前記ワークWの屈曲
部の通過途中で停止している型18bはワークWの屈曲
部に干渉し、もとに戻らず型18bは型18aと協同し
てワークWを押出す形となりストッパ22より離間する
。Next, as shown in FIG. 9(C), when the amount of backward movement of the mold 18a exceeds the length of the guide groove 27, the pin 26 moves into the guide groove 27.
The link 19a starts to move backward together with the mold 18a. As the link 19a moves backward, the other links 19b and 19C are pulled and expanded, and the mold 18
a and the die 18b are separated from their combined state, and the die 111'b becomes able to move upward of the bent portion of the workpiece W, and starts to move favorably as it is pulled by the links 19a to 19c. The mold 18a further moves backward, as shown in FIG. 9 ([1
), the rotation of the connecting joints of the links 19a to 19c allows the mold 18b to change its posture at the bending part of the workpiece W, and when the mold 18b is located halfway through the bending part of the workpiece W, the cylinder 23 is moved. The backward movement is stopped, the movement is switched to the forward movement, and the return to the original position is performed. At this time, the die 18b, which is stopped in the middle of passing the bending part of the workpiece W, interferes with the bending part of the workpiece W and does not return to its original position. The die 18b cooperates with the die 18a to extrude the workpiece W and is separated from the stopper 22.
上記押出されたワークWは作業員が手で引き抜いて中子
18より取り出す。The extruded workpiece W is manually pulled out by the worker and taken out from the core 18.
このとき第9図([)で示すようにリンク19a〜19
Cは略−M線状となり、型18aは姿勢を自己変位して
ワークWの屈曲部を通過しワークWの引き抜きを許容す
るのである。At this time, as shown in FIG. 9 ([), links 19a to 19
C becomes approximately -M linear, and the mold 18a self-displaces its posture to pass through the bent portion of the workpiece W and allow the workpiece W to be pulled out.
尚、ワークWに円筒部がある場合は図略の上型に装備さ
れている円軸状の中子25が上型の下降に伴い第9図(
^)で示すようにワークWの端部に挿入されて上型と下
型24とにより成形が行われ、上型上昇に伴い第9図(
b)で示すように中子25はワークW端より抜いて第9
図(C)で示すように上型とともに上昇する。If the workpiece W has a cylindrical part, the cylindrical core 25 installed in the upper mold (not shown) moves as the upper mold lowers, as shown in Fig. 9 (
As shown in ^), it is inserted into the end of the work W and molding is performed by the upper die and the lower die 24, and as the upper die rises, the shape shown in Fig. 9 (
As shown in b), the core 25 is pulled out from the workpiece W end and placed at the ninth
As shown in Figure (C), it rises together with the upper die.
また、ワークWを中子18より引き抜き後には型18b
はスプリング20の収縮によりリンク19a〜19cに
よって引っ張られ型18aと合体結合して原型に復する
。Moreover, after pulling out the workpiece W from the core 18, the mold 18b
is pulled by the links 19a to 19c by the contraction of the spring 20, and is combined with the mold 18a to return to its original shape.
〈発明の効果〉
以上のように本発明方法によると、フランジをもたない
不定形中空断面部材が一枚の板金材によってプレス加工
され、従来の問題点を全て解決した不定形中空断面部材
が得られる。<Effects of the Invention> As described above, according to the method of the present invention, an irregular hollow cross-section member without a flange is press-formed from a single sheet metal material, and an irregular hollow cross-section member that solves all the problems of the conventional method can be obtained. can get.
また、本発明によるプレス加工用中子は、複数の分割型
を複数のリンクとスプリングとによるフレキシブルジヨ
イントとしな構成であるから、屈曲部を有する蛇行した
不定形中空断面部材のプレス成形後の中子抜きが容易に
行われ、上記本発明のプレス加工方法を実現する利・点
がある。In addition, since the press working core according to the present invention has a flexible joint made of a plurality of split dies and a plurality of links and springs, the core for press working according to the present invention is flexible after press forming of a meandering irregular hollow cross-section member having a bending part. Core removal is easily performed, which has the advantage of realizing the above-mentioned press working method of the present invention.
第1図は本発明によるプレス加工方法の成形工程の一実
施例を示す図、第2図は第2工程の具体例を示す斜視図
、第3図は第2図■−■線断面図、第4図は第3工程の
具体例を示す斜視図、第5図は第4図v−V線断面図、
第6図は第4工程の主要構成部の斜視図、第7図は前記
主要構成部と下型部との全体斜視図、第8図は上型に装
備される円軸状の中子の斜視図、第9図(八)〜(E)
は本発明の中子と、この中子抜き順序を説明する断面図
、第10図は従来の不定形中空断面部材の構成を示す斜
視図である。
18・・・中子、18a 、18b−・・型、19a
〜19c −・・リンク、20・・・スプリング、21
・・・プレート、22・・・ストッパ、23・・・シリ
ンダ。
特許出願人 関東自動車工業株式会社外1名Fig. 1 is a diagram showing an embodiment of the forming process of the press working method according to the present invention, Fig. 2 is a perspective view showing a specific example of the second step, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2, FIG. 4 is a perspective view showing a specific example of the third step, FIG. 5 is a sectional view taken along the line v-V in FIG.
FIG. 6 is a perspective view of the main components in the fourth step, FIG. 7 is an overall perspective view of the main components and the lower mold part, and FIG. 8 is a cylindrical core installed in the upper mold. Perspective view, Figures 9 (8) to (E)
FIG. 10 is a cross-sectional view illustrating the core of the present invention and the order of removing the core, and FIG. 10 is a perspective view showing the structure of a conventional irregular hollow cross-sectional member. 18... Core, 18a, 18b-... Mold, 19a
~19c--Link, 20...Spring, 21
...Plate, 22...Stopper, 23...Cylinder. Patent applicant: 1 person other than Kanto Jidosha Kogyo Co., Ltd.
Claims (2)
面に形成する工程と、前記工程で成形された略ハット状
断面の鍔状部分を複数に分割した各部の型をフレキシブ
ルジョイントにより屈伸自在に連結してなる中子に沿っ
て寄せ曲げして中空断面に成形する工程とからなり、前
記寄せ曲げによる突当部を必要に応じて溶接することを
特徴とする不定形中空断面部材のプレス加工方法。(1) The process of forming a sheet metal material cut into a predetermined shape into a roughly hat-shaped cross section, and the mold of each part, which is formed by dividing the brim-shaped part with a roughly hat-shaped cross section formed in the above process, into a plurality of parts is bent and stretched using a flexible joint. An irregular hollow cross-section member comprising a step of forming a hollow cross-section by bending it together along freely connected cores, and welding abutting portions formed by said bending as necessary. Pressing method.
て、成形すべき形状の型を複数に分割し、この型をリン
クにより屈伸可能に連結すると共に、スプリングにより
成形すべき形状の型形態に引き寄せてなるプレス加工用
中子(2) A core for pressing an irregularly shaped hollow cross-section member, in which a mold of the shape to be molded is divided into a plurality of molds, the molds are connected in a bendable and extensible manner by a link, and a mold of the shape to be molded is used by a spring. Cores for press processing that are drawn to form
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62110479A JPH0787944B2 (en) | 1987-05-08 | 1987-05-08 | Pressing method for amorphous hollow section members |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62110479A JPH0787944B2 (en) | 1987-05-08 | 1987-05-08 | Pressing method for amorphous hollow section members |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63278614A true JPS63278614A (en) | 1988-11-16 |
JPH0787944B2 JPH0787944B2 (en) | 1995-09-27 |
Family
ID=14536757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62110479A Expired - Lifetime JPH0787944B2 (en) | 1987-05-08 | 1987-05-08 | Pressing method for amorphous hollow section members |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0787944B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008080381A (en) * | 2006-09-28 | 2008-04-10 | Yorozu Corp | Method of manufacturing bent hollow pipe |
JP2010023102A (en) * | 2008-07-23 | 2010-02-04 | Fuji Heavy Ind Ltd | Method for producing beam, and beam |
JP2010075993A (en) * | 2008-09-01 | 2010-04-08 | Mazda Motor Corp | Method of manufacturing closed cross-section member made from metal |
JP2011005552A (en) * | 2008-09-01 | 2011-01-13 | Mazda Motor Corp | Method of manufacturing member having closed cross section made of metal |
JP2011189398A (en) * | 2010-03-16 | 2011-09-29 | Mazda Motor Corp | Manufacturing method of metal member with hollow cross section member |
JP2013526411A (en) * | 2010-05-19 | 2013-06-24 | ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフト | Manufacturing method of hollow profile |
JP2018114518A (en) * | 2017-01-17 | 2018-07-26 | フタバ産業株式会社 | Pipe body molding method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6054124A (en) * | 1983-09-02 | 1985-03-28 | 株式会社日立製作所 | Vacuum breaker |
JPS623827A (en) * | 1985-06-29 | 1987-01-09 | Mazda Motor Corp | Press die tool having cam mechanism |
-
1987
- 1987-05-08 JP JP62110479A patent/JPH0787944B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6054124A (en) * | 1983-09-02 | 1985-03-28 | 株式会社日立製作所 | Vacuum breaker |
JPS623827A (en) * | 1985-06-29 | 1987-01-09 | Mazda Motor Corp | Press die tool having cam mechanism |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008080381A (en) * | 2006-09-28 | 2008-04-10 | Yorozu Corp | Method of manufacturing bent hollow pipe |
JP2010023102A (en) * | 2008-07-23 | 2010-02-04 | Fuji Heavy Ind Ltd | Method for producing beam, and beam |
JP2010075993A (en) * | 2008-09-01 | 2010-04-08 | Mazda Motor Corp | Method of manufacturing closed cross-section member made from metal |
JP2011005552A (en) * | 2008-09-01 | 2011-01-13 | Mazda Motor Corp | Method of manufacturing member having closed cross section made of metal |
JP4640481B2 (en) * | 2008-09-01 | 2011-03-02 | マツダ株式会社 | Method for producing metal closed section member |
US8365411B2 (en) | 2008-09-01 | 2013-02-05 | Mazda Motor Corporation | Method of producing metal closed-section member |
JP2011189398A (en) * | 2010-03-16 | 2011-09-29 | Mazda Motor Corp | Manufacturing method of metal member with hollow cross section member |
JP2013526411A (en) * | 2010-05-19 | 2013-06-24 | ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフト | Manufacturing method of hollow profile |
US9272318B2 (en) | 2010-05-19 | 2016-03-01 | Thyssenkrupp Steel Europe Ag | Method for producing a hollow profiled section |
JP2018114518A (en) * | 2017-01-17 | 2018-07-26 | フタバ産業株式会社 | Pipe body molding method |
US10634036B2 (en) | 2017-01-17 | 2020-04-28 | Futaba Industrial Co., Ltd. | Method for molding pipe body |
Also Published As
Publication number | Publication date |
---|---|
JPH0787944B2 (en) | 1995-09-27 |
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